(LACONIA) - Authorities say a Seymour teenager has died after the car she was driving struck a tree, throwing her from the vehicle.

A coroner in Louisville, Kentucky, says 17-year-old Michelle Kiewitt was pronounced dead in a University of Louisville Hospital operating room around 12:15 a.m. Sunday, about two hours after the crash.

Authorities say Kiewitt wasn't wearing a seatbelt when she lost control of the car on Indiana 337 near the town of Laconia, about 25 miles southwest of Louisville.

The Harrison County Sheriff's Department says two teenage passengers riding in the car also suffered injuries, including one who was in critical condition at the hospital Sunday. The other was in stable condition there.

Speed is believed to be a factor in the crash. The teens may have been camping nearby, the sheriff's office said, and were likely unfamiliar with the area.

Arrangements for Kiewitt are being handled by Voss and Sons Funeral Home in Seymour.